N-propyl acetate preparation reaction kettle capable of preventing gas leakage

Abstract

The utility model provides an n-propyl acetate preparation reaction kettle capable of preventing gas leakage, which comprises a reaction kettle main body, a feeding assembly and a discharge port are arranged on the reaction kettle main body, a stirring paddle is arranged in the reaction kettle main body, and the stirring paddle is connected with a stirring motor; the feeding assembly comprises a feeding cavity, an upper sealing cover and a lower sealing door, and the feeding cavity is communicated with the reaction kettle; the upper sealing cover is rotatably arranged at the top end of the feeding cavity, an electric air pump is arranged in the upper sealing cover, an expansion balloon is arranged on the side, facing the feeding cavity, of the upper sealing cover, and the electric air pump is communicated with the expansion balloon; and the lower sealing door is rotatably arranged at the bottom of the feeding cavity. According to the n-propyl acetate preparation reaction kettle capable of preventing gas leakage disclosed by the embodiment of the utility model, gas leakage can be prevented when raw materials or catalysts are added into the reaction kettle, so that the safety degree in the n-propyl acetate preparation process is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of reaction kettle equipment, in particular to a gas leakage-proof n-propyl acetate preparation reaction kettle. Background Art

[0002] N-propyl acetate, also known as n-propyl acetate, is an important organic chemical intermediate. N-propyl acetate is usually prepared by the reaction of glacial acetic acid and n-propanol under the catalysis of concentrated sulfuric acid. The specific steps are to add glacial acetic acid, n-propanol and concentrated sulfuric acid into a reactor respectively, start stirring, heat and reflux, stop heating after the reaction is complete, pass cooling water into the jacket of the reactor to cool to room temperature, take out the reaction liquid and neutralize it with sodium carbonate, separate the alkali solution and dry it with concentrated sulfuric acid, separate the waste acid and put the material into a distillation kettle for atmospheric distillation to obtain the finished product of n-propyl acetate.

[0003] During the process of heating and stirring the raw materials in the reactor, it is sometimes necessary to add raw materials or catalysts. When adding raw materials or catalysts, the gas in the reactor is easy to leak out, causing safety accidents and affecting the health of related personnel. Utility Model Content

[0004] The utility model aims to solve one of the technical problems in the above-mentioned technology at least to a certain extent.

[0005] To this end, the first purpose of the utility model is to provide a gas leakage-proof n-propyl acetate preparation reactor, which can prevent gas leakage when adding raw materials or catalysts into the reactor, thereby improving the safety level in the preparation process of n-propyl acetate.

[0006] To achieve the above-mentioned purpose, an embodiment of the utility model proposes a gas leakage-proof n-propyl acetate preparation reactor, comprising: a reactor body, a feeding assembly and a discharge port are arranged on the reactor body, a stirring paddle is arranged inside the reactor body, and the stirring paddle is connected to a stirring motor; the feeding assembly comprises a feeding cavity, an upper closing cover and a lower closing door, wherein the feeding cavity is connected to the reactor; the upper closing cover is rotatably arranged at the top of the feeding cavity, an electric air pump is arranged in the upper closing cover, an expansion balloon is arranged on the side of the upper closing cover facing the feeding cavity, and the electric air pump is connected to the expansion balloon; the lower closing door is rotatably arranged at the bottom of the feeding cavity.

[0007] A gas leakage-proof n-propyl acetate preparation reactor according to an embodiment of the utility model can prevent gas leakage when adding raw materials or catalysts into the reactor, thereby improving the safety level in the n-propyl acetate preparation process.

[0008] In addition, the gas leakage-proof n-propyl acetate preparation reaction kettle according to the above embodiment of the utility model may also have the following additional technical features:

[0009] Furthermore, a closed ring is arranged around the bottom of the feeding cavity, and the lower closed door can be in contact with the closed ring in coordination.

[0010] Furthermore, a closing groove is arranged on one side of the closing ring facing the lower closing door, and a closing convex strip is arranged on one side of the lower closing door facing the closing ring, and the closing convex strip can be embedded in the closing groove.

[0011] Furthermore, a closed motor is arranged outside the feeding cavity, and the closed motor cooperates with the lower closed door.

[0012] Additional aspects and advantages of the present invention will be given in part in the following description and in part will become apparent from the following description or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0014] Figure 1 This is a schematic structural diagram of a gas leakage-proof n-propyl acetate preparation reaction kettle according to an embodiment of the utility model;

[0015] Figure 2 It is a partial structural schematic diagram of a gas leakage-proof n-propyl acetate preparation reaction kettle according to one embodiment of the utility model;

[0016] Figure 3 Schematic diagram of the local morphological changes of a gas leakage-proof n-propyl acetate preparation reactor according to an embodiment of the utility model Figure 1 ;

[0017] Figure 4 Schematic diagram of the local morphological changes of a gas leakage-proof n-propyl acetate preparation reactor according to an embodiment of the utility model Figure 2 ;

[0018] Figure 5 Schematic diagram of the local morphological changes of a gas leakage-proof n-propyl acetate preparation reactor according to an embodiment of the utility model Figure 3 .

[0019] Figure numerals: 100, reactor body, 110, feed assembly, 111, feed chamber, 112, upper closing cover, 113, electric air pump, 114, expansion balloon, 115, closing ring, 116, lower closing door, 117, closing motor, 120, stirring paddle, 130, stirring motor, 140, discharge port. DETAILED DESCRIPTION

[0020] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0021] A gas leakage-proof n-propyl acetate preparation reaction kettle according to an embodiment of the utility model will be described below with reference to the accompanying drawings.

[0022] like Figure 1 , Figure 2 and Figure 3 As shown, a gas leakage-proof n-propyl acetate preparation reactor according to an embodiment of the utility model comprises a reactor body 100, on which a feeding assembly 110 and a discharge port 140 are arranged, and a stirring paddle 120 is arranged inside the reactor body 100, and the stirring paddle 120 is connected to a stirring motor 130; the feeding assembly 110 comprises a feeding cavity 111, an upper closing cover 112 and a lower closing door 116, wherein the feeding cavity 111 is connected to the reactor; the upper closing cover 112 is rotatably arranged at the top of the feeding cavity 111, an electric air pump 113 is arranged in the upper closing cover 112, an expansion balloon 114 is arranged on the side of the upper closing cover 112 facing the feeding cavity 111, and the electric air pump 113 is connected to the expansion balloon 114; the lower closing door 116 is rotatably arranged at the bottom of the feeding cavity 111.

[0023] Specifically, during the reaction of the reactor body 100, the upper closed cover 112 and the lower closed door 116 are both in a closed state, which can prevent leakage of gas generated by the reaction. If raw materials or catalysts need to be added to the reactor body 100 during the reaction, they can be added through the feeding assembly 110. First, relevant professionals control the electric air pump 113 to start, and open the lower closed door 116. The electric air pump 113 inflates the expansion balloon 114, and the expansion balloon 114 gradually expands. During the expansion of the expansion balloon 114, the gas in the feeding cavity 111 is discharged into the reactor body 100 through the lower closed door 116. After the electric air pump 113 runs for a predetermined time or the expansion balloon 114 expands to a predetermined size (such as Figure 3 As shown), relevant professionals close the lower closed door 116.

[0024] Then, open the upper closure cover 112 and start the electric air pump 113 in reverse to make the feeding assembly 110 reach the state as shown in FIG. Figure 4 At this time, the relevant professionals add raw materials or catalysts into the feeding chamber 111. After the addition is completed, the relevant professionals close the upper sealing cover 112 and then open the lower sealing door 116. Figure 5In the form shown, the added raw materials or catalysts can slide down the lower closed door 116 into the reactor body 100 .

[0025] It is understandable that when the expansion balloon 114 expands and fills the feed cavity 111, closing the lower sealing door 116 and opening the upper sealing cover 112 will not cause gas leakage in the reactor body 100 even if the operation is repeated.

[0026] Furthermore, if Figure 2 and Figure 3 As shown, a closed ring 115 is provided around the bottom of the feeding cavity 111, and the lower closed door 116 can be matched with the closed ring 115. A closed groove is provided on the side of the closed ring 115 facing the lower closed door 116, and a closed convex strip is provided on the side of the lower closed door 116 facing the closed ring 115, and the closed convex strip can be embedded in the closed groove.

[0027] Specifically, when the lower closing door 116 is closed, the closing convex strip can be embedded in the closing groove, which can increase the closing effect of the lower closing door 116.

[0028] Furthermore, if Figure 2 As shown, a closed motor 117 is disposed outside the feeding chamber 111 , and the closed motor 117 cooperates with the lower closed door 116 .

[0029] Specifically, by controlling the opening and closing of the lower closed door 116 through the closed motor 117, the opening and closing speed of the lower closed door 116 can be increased, thereby improving the working efficiency of the gas leakage-proof n-propyl acetate preparation reactor.

[0030] In summary, the gas leakage-proof n-propyl acetate preparation reactor of the embodiment of the utility model can prevent gas leakage when adding raw materials or catalysts into the reactor, thereby improving the safety level in the preparation process of n-propyl acetate.

[0031] In the description of this specification, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0032] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0033] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A gas leakage-proof n-propyl acetate preparation reactor, characterized in that: include: A reactor body, wherein a feed assembly and a discharge port are arranged on the reactor body, a stirring paddle is arranged inside the reactor body, and the stirring paddle is connected to a stirring motor; The feed assembly comprises a feed cavity, an upper closing cover and a lower closing door, wherein the feed cavity is connected to the reaction kettle; The upper closing cover is rotatably arranged at the top of the feeding cavity, an electric air pump is arranged inside the upper closing cover, an expansion balloon is arranged on one side of the upper closing cover facing the feeding cavity, and the electric air pump is connected to the expansion balloon; The lower closed door is rotatably arranged at the bottom of the feeding cavity.

2. The gas leakage-proof n-propyl acetate preparation reaction kettle according to claim 1, characterized in that: A closed ring is arranged around the bottom of the feeding cavity, and the lower closed door can be in contact with the closed ring in coordination.

3. The gas leakage-proof n-propyl acetate preparation reaction kettle according to claim 2, characterized in that: A closing groove is arranged on one side of the closing ring facing the lower closing door, and a closing convex strip is arranged on one side of the lower closing door facing the closing ring. The closing convex strip can be embedded in the closing groove.

4. The gas leakage-proof n-propyl acetate preparation reaction kettle according to claim 1, characterized in that: A closed motor is arranged outside the feeding cavity, and the closed motor cooperates with the lower closed door.

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